SheevaPlug fails to boot from SD

[Jonas Häggqvist <rasher@rasher.dk>]

I installed Debian on my plug, to an SD card following the instructions 
from http://www.cyrius.com/debian/kirkwood/sheevaplug/install.html

The install went fine, but I can't manage to get the last step working, 
namely setting the plug up to boot Debian from the SD. I partitioned in 
d-i, with a single partition for / plus a swap partition.

Marvell>> setenv bootargs_console console=ttyS0,115200
Marvell>> setenv bootcmd_mmc 'mmcinit; ext2load mmc 0 0x0800000 
/boot/uInitrd; ext2load mmc 0 0x400000 /boot/uImage'
Marvell>> setenv bootcmd 'setenv bootargs $(bootargs_console); run 
bootcmd_mmc; bootm 0x400000 0x0800000'
Marvell>> run bootcmd
SD found. Card desciption is:
Manufacturer:       0x03, OEM "SD"
Product name:       "SU01G", revision 8.0
Serial number:      1091923440
Manufacturing date: 7/2008
CRC:                0x00, b0 = 0

** Invalid partition type "����" (expect "U-Boot")

** Invalid partition type "����" (expect "U-Boot")
## Booting image at 00400000 ...
Bad Magic Number
Marvell>>

U-Boot 1.1.4 (Sep 14 2009 - 15:36:37) Marvell version: 3.4.19

--
Jonas Häggqvist
rasher(at)rasher(dot)dk